PROCESS avocados, cream cheese and lime juice in food processor until smooth; spoon into pastry bag fitted with fluted tip.
COMBINE beans and peppers.
FOR each serving: Spoon 2 tsp. bean mixture onto center of one toast slice. Place 1 shrimp next to bean mixture on each toast slice, then pipe about 4 tsp. avocado mixture next to each shrimp. Top each with 1/2 tsp. tomatoes and cilantro leaf.